图纸内容还应包括材料部件编号，间隙公差，表面机械加工符号，热处理信息，表面保护，材料重量，以及其他的必要内容。

Drawings will also include the material part Numbers, tolerances clearances, surface machining symbols, heat treatment information, surface protection, material weight and other necessary information.

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进口设备的实际重量应不少于附录IV中规定的95 %，或负5%的测量允许公差。

The actual weight of imported Equipment shall not be less than 95% of the total weight per Appendix iv, or a measuring tolerance of negative 5%.

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每一活塞组的重量配平公差不超过0.5克。

Each piston set is matched to within 0.5 gram.

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